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3.Results 
Application of the acquired imagery have been carried out 
with the existing hardware and software to the following 
problem areas: 
1) Water Sedimentation 
The tidal environment of Wilhelmshaven creates a number of 
sedimentation problems for the Ship channel or the beaches 
and coastal structures of the adjacent East Friesian Islands. 
While sand transport occurs at depth, 
particles can be made visible in remot 
at or near the surface of the water. 
only suspended clay 
e sensing imagery 
Particularly the red spectral band permits to discern water 
bodies composed of different levels of clay concentration. 
Such images permit to determine the direction of flow. 
Visual observation of images of coastal Structures 
has shown, for example, that such Structures have not been 
build in an optimal position with respect to the direction 
of flow; most likely this has occured due to mistakes in azimuthal 
recording of in situ current meters or due to errors of navigation 
and interpolation. 
Lines of flow can be seen as boundaries of water bodies 
with different sediment concentration, if the images are 
digitally processed for derivation of level slices of 
second order. Lines of flow will then appear as contour lines 
in the processed image, Such information is particularly 
useful for the comparison of image scenes taken at different 
intervals of the tidal cycle. 
It is finally also possible to measure sediment concentration 
at the water surface by correlating it to reflectance. 
To make this correlation possible extensive laboratory 
and field tests have been carried out. For varying light 
levels (determinable by measuring global radiation of the sky) 
samples of known sediment concentration have been used 
to establish conversion curves relating reflectance with 
sediment concentration. 
Tests of this kind have proved successful; harbour engineers 
cannot, however utilize this information in their sedimentation 
models, since their aralytical approach so far has been too 
simple.